TY - JOUR
T1 - Pillar[5]arene Stabilized Silver Nanoclusters: Immense Stability and Luminescence Enhancement Induced by Host-Guest Interactions.
AU - Muhammed, Madathumpady
AU - Cruz, Laila
AU - Emwas, Abdul-Hamid M.
AU - El-Zohry, Ahmed
AU - Moosa, Basem
AU - Mohammed, Omar F.
AU - Khashab, Niveen M.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We would like to acknowledge Dr.Dalaver Anjum from KAUST Core Labs for HRTEM measurements.
PY - 2019/8/28
Y1 - 2019/8/28
N2 - Herein, we report the synthesis of a new class of functional silver nanoclusters (AgNCs) capped with pillar[5]arene (P5) based host ligands. These NCs are readily prepared via direct synthesis or ligand exchange synthesis and are stable at room temperature for over 4 months. The pillar[5]arene stabilized NCs (Ag29(LA-P5)12(TPP)2) endorse reversible host-guest interactions with neutral alkylamines and cationic quaternary ammonium guests. This results into the formation of spherical assemblies with unparalleled changes in their optical properties including an astonishing ≈2000-fold luminescence enhancement. This is the highest luminescence enhancement ratio reported so far for such atomically precise NCs. Our synthetic protocol paves the way for the preparation of a new generation of metal nanoclusters protected by macrocyclic ligands with molecular recognition and selectivity toward specific guests.
AB - Herein, we report the synthesis of a new class of functional silver nanoclusters (AgNCs) capped with pillar[5]arene (P5) based host ligands. These NCs are readily prepared via direct synthesis or ligand exchange synthesis and are stable at room temperature for over 4 months. The pillar[5]arene stabilized NCs (Ag29(LA-P5)12(TPP)2) endorse reversible host-guest interactions with neutral alkylamines and cationic quaternary ammonium guests. This results into the formation of spherical assemblies with unparalleled changes in their optical properties including an astonishing ≈2000-fold luminescence enhancement. This is the highest luminescence enhancement ratio reported so far for such atomically precise NCs. Our synthetic protocol paves the way for the preparation of a new generation of metal nanoclusters protected by macrocyclic ligands with molecular recognition and selectivity toward specific guests.
UR - http://hdl.handle.net/10754/656671
UR - http://doi.wiley.com/10.1002/anie.201906740
UR - http://www.scopus.com/inward/record.url?scp=85073615567&partnerID=8YFLogxK
U2 - 10.1002/anie.201906740
DO - 10.1002/anie.201906740
M3 - Article
C2 - 31456248
SN - 1433-7851
VL - 58
SP - 15665
EP - 15670
JO - Angewandte Chemie (International ed. in English)
JF - Angewandte Chemie (International ed. in English)
IS - 44
ER -